Cutting mechanism for harvesters



(No Model.)

F, 'VAN DEN BOSCH;

CUTTING MEGHANISM To/R HARVESTERS.

No. 357,512. Patented Feb. 8, 1887.

`WITJVESES G l; INVENTOR #.{M/Z 7 wym Z. I .Attorney -cutting mechanism of a harvester provided STATES @MTE . ATENT einen.

CUTTING MECHANISM FOR HARVESTERS.

SPECIFICATION forming part of Letters Patent No. 357,512, dated February 8, 1887.

Application filed December 23, 1885. Serial No. 186,525. (No model.)

To aZZ whom, it may concern:

Be it known that I, FREDERICK VAN DEN BOsCH,asubjectoftheKing ofNetherlands,and a resident of Parkers Landing, in the county of Armstrong and State' of Pennsylvania, have invented certain new and useful Improvements in CuttingMechanism for Harvesters; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in whieh-- Figure l is a plan View of a portion of the with my improved cutter-bar. Fig. 2 is a similar View showing the keeper removed and one of the blades removed, and Fig. 3 is a View of one of the blades.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relationv to that class of cutter-bars in which the blades may be removed by removing a keeper at the end of the bar and sliding the blades to one side, the blades having slots or notches in their side edges fitting upon studs upon the cutter-bar; and it consists in the improved construction and combination of parts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the'letter A indicates the finger-bar, having the nger's B, whichare of the usual construction; and C is the cutter-bar. This cutter-bar is provided with a number of equidistant studs, D, having suitable iiat heads, E, which will project over the upper sides of the blades F. One of the rear corners of these blades is provided with a recess or notch, G, near the rear edge. The portion of the'blade between the notch and said edge is cut off near the base of the notch, so as to form a short inclined outer edge, H, parallel with the forwardlyinclined edge of the blade upon that side. The other rear corner is cut away so as to leave two inclined edges, I and J, having a step, P, between them, each of said two faces or edges being parallel with the edge H.

It will be seen that when the blades are placed upon the cutterbar, with the notches fitting upon the studs of the cutter-bar, the

opposite edges of the blades will fit into each other and retain each other i-n position; and at one end of the cutter-bar is secured a keeper, K, having a slot, L, and inclined edges L and M, which correspond to and it against the zigzag-shaped edge of the adjoining blade, tting upon the outermost stud, and this keeper is retained in place by means of'a screw, N, passing through a perforation, O, in the keeper and into the cutter-bar. It will thus be seen that one blade will secure the other fitting with its zigzag-shaped edge against the zigzag shaped and slotted edge, and the keeper will secure the outermost blade, and when this keeper is removed the blades may be removed successively, either for the purpose of grinding them or for the purpose of replacing a broken blade, or for any other purpose.

It is impossible for any of the blades to become loose or to drop out, as the notched edge is retained by the stud, and the overhanging portion of this edge, forming the outer edge of the stud, will retain the zigzagfshaped adjoining' edge.

I am aware that sickle-bars have been made with detachable cutters which were retained upon the cutter-bar by means of studs engaging notches or slots in the blades, and I do not wish to make any broad claim for such construction; but I am not aware that the blades have been formed with correspondingly ontout edges `of zigzagpshape and formed with notches fitting upon studs, one keeper at one end of the bar securing all the blades; and

I therefore claim and desire to secure by Letters Patent of the United States- In the cutting mechanism for harvesters, thev combination of a cutter-bar having a number of equidistant iiat-headed studs, blades secured thereto, each of said blades having a notch or recess at one corner near the rear edge, and having the portion between said notch and the rear edge cut away to near the base of said recess, said cut-away portion having an inclined edge, the other corner of said blades being cutaway so as to leave two inclined edges having a step between them, each of said inclined faces or edges being parallel ICO , with the forwardly-inclined edge of the blade my own I have hereunto affixed my signature upon the side in which the said notch is`1oin presence of two Witnesses.

cated :L keeper havin01 one end provided with a hole and the otherbwith a recess 01` notch FREDERICK VAN DEN BOSCH' 5 and two inclined faces or edges, and a screw Vitlicsses:

fol` securing said keeper to the cutter-bar. W. E. KAMS, In testimony that I claim the foregoing as A. C. SUITE. 

